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https://issues.apache.org/jira/browse/HDFS-16558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17526986#comment-17526986
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Yuanbo Liu commented on HDFS-16558:
-----------------------------------
cc: [~hexiaoqiao] [[email protected]] [~daryn] [~kihwal] to bring more
discussion
here is the related issue: HDFS-13112
> Consider changing the lock of delegation token from write lock to read lock
> ---------------------------------------------------------------------------
>
> Key: HDFS-16558
> URL: https://issues.apache.org/jira/browse/HDFS-16558
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Yuanbo Liu
> Priority: Major
> Attachments: image-2022-04-24-14-13-04-695.png,
> image-2022-04-24-14-13-52-867.png
>
>
> In a very busy authed cluster, renewing/caneling/getting delegation token get
> slow and it will slow down the speed of handling rpcs from client. Since
> AbstractDelegationTokenSecretManager is a thread-safe manager, we propose to
> change the fs lock from write lock to read lock(protect editlog rolling)
> !image-2022-04-24-14-13-04-695.png|width=334,height=212!
> !image-2022-04-24-14-13-52-867.png|width=324,height=173!
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